Lamp



FIG. 1 is a side view of my design (the opposite side view being symmetrical);

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front/side perspective view thereof.

The broken lines on the drawings represent portions of the lamp that form no part of the claimed design. 

I claim the ornamental design for a lamp, as shown and described. 